Iridium construction ensures long-lasting durability and consistent performance
Optimized for E85 fuel, supporting advanced fuel blends for cleaner combustion
Compatible with JZ and 7M engines, offering versatile replacement options
Interference-free design at 5 kOhm resistance for reliable ignition
One step colder firing temperature than NGK 4644, improving cold starts
Summarized by Shop
The NGK BKR8EIX 2668 spark plug is our go-to iridium spark plug for JZ's and 7m's running E85. This plug works well as a replacement for both JZ's and 7m's. These plugs are 1 step colder than the NGK 4644's and work well for 600+ HP builds. Be careful of inferior, fake NGK spark plugs that look the same but don't perform the same! The pri
